ktvu's jade hernandez is live in san francisco with local reaction and we begin with debora villalon. >> we're at frank ogawa plaza, where you can see people are gathered here, this protest starting to grow in just the last half-hour. many people are wearing hoodies and some carrying signs and protesters outraged that martin's shooting was seen bit jurors as justifiable self- defense. >> we the jury find george zimmerman not guilty. 2-year-old george zimmerman heard the verdict with little emotion after 16 hours' of deliberation, the jury cleared him of second-degree murder in the shooting death of 17-year- old trayvon martian. >> obviously , we are ecstatic with the results. >> reporter: the prosecution admits that the case was difficult. >> what we always believed was that this was a case of details that had to be analyzed very, very carefully. >> reporter: the shooting happened in february last year. in the small town of sanford, outside of orlando. with screams recorded on the now infamous 911 call. the mother of george zimmerman said it was her son's voice. the mother of trayvon